Sun Microsystems to Buy Pixo

Computer Maker Hopes to Propel
Sales of Games to Cellphone Users

Sun Microsystems Inc. has agreed to buy closely held Pixo Inc., another sign of the computer maker's plans to spur sales of games and other digital content to users of mobile devices.

Pixo, a six-year-old company based in San Jose, Calif., sells software to help network operators and other companies centrally manage their distribution of games, ring tones and other content to phones and other devices. Terms of the all-cash purchase,...